<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        var a = '1';
        var b = 1;
        if (a===b){
            console.log("true")
        }
        else {
            console.log("false")
        }
        for (let i = 0; i < 10; i++) {
            console.log("i="+i);
        }
    </script>
</head>
<body>
<button>按钮</button>
</body>
</html>